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基于VISSIM仿真的交叉口优化方案研究

2021-05-12马健江雪昊张丽岩

物流科技 2021年11期

马健 江雪昊 张丽岩

摘  要:由于路口通行能力受到用地紧张、施工对通行能量影响较大等因素的影响,交叉路口的通行能力近年来屡受诟病。扩建路口、实施单行等一系列管理措施并不能短时间内缓解路口的通行压力。文章选取了苏州市吴江区运东大道—东太湖大道交叉口为例,在对交叉口现状进行分析后,设计了近、远期两套优化方案,并基于VISSIM对优化方案进行仿真。

关键词:信号配时;交叉口延误;VISSIM仿真

中图分类号:F570    文献标识码:A

Abstract: Because the traffic capacity of intersections is affected by factors such as tight land use and greater impact of construction on traffic energy, the traffic capacity of intersections has been criticized repeatedly in recent years. A series of management measures such as the expansion of intersections and the implementation of single lanes cannot alleviate the traffic pressure at the intersection in a short time. This paper selects the intersection of Yundong Avenue and East Taihu Avenue in Wujiang District, Suzhou city. After analyzing the current situation of the intersection, two sets of optimization schemes are designed for the near and long term, and the optimization scheme is simulated based on VISSIM.

Key words: signal timing; intersection delay; VISSIM simulation

1  研究背景

随着社会经济的持续快速发展,整个社会对交通运输的需求日益增加,城市交通问题日益严重。交通事故率居高不下,特别是在城市路网的节点——交叉路口处问题尤为突出。对于整个城市道路交通网络而言,十字路口是城市路网的瓶颈地带,城市交通流畅运作的关键,所以可以说交叉口的通行状态与整个城市的交通运行状态密切相关,扩建道路及建设立体交通体系是缓解此类问题的有效方式,但由于工程规模大、费用高、用地紧张、工期长等问题,其受到了较大的限制。因此,通过对交叉口进行合理交通组织优化,利用现有的路网条件,以交通流量、流向为依据,通过理顺交叉口交通秩序、合理的分配路权,并进行科学的渠化设计,以优化路网上的交通流量、流向分布,挖掘进出口的通行能力已经引起许多城市日益重视,并作为减少交通问题、规范行车秩序的经济方法和有效手段。

2  研究对象现状

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